Permit to allow perpetually unique product downloads

There is unquestionably a strong trend toward consumers wanting more personalized and/or customized products and services. These marketing thrusts can be seen everywhere. Zen Cart, as built, doesn't seem capable of handling this trend. Threads similar to this going back in the Forum to 2006 have not yielded any answers or solutions to how we can sell, and process these sales beyond handling different sizes and colors. I don't want to have to deal with the labor overhead of constantly updating attributes or clogging my download directory for each and every customer that orders a product. Opportunity knocks!

I am migrating this request to this forum because nobody has undertaken creating it as a feature.

I raised this problem in an attributes post at http://www.zen-cart.com/forum/showthread.php?t=192965.

I'll welcome any suggestions on how I can configure Zen Cart 1.3.9H to permit customers to download their own highly personalized videos and E-books. I provide approximately 300 different titles from which the customer can choose. There is a 5 day lag between purchase and delivery as it takes time to process the order. Downloading is the delivery method of choice because the file sizes can be quite large. In a given scenario, two customers choosing the same title will each receive unique variants of that same title because of the personalized nature of the title so I cannot give their downloaded files the same name for fear of overwriting one another's files. I'd have to allow that a customer may purchase more than one title at a time, complicating matters even more. Further, each chosen title will require a facial portrait photo to be uploaded and correctly identified/linked with the proper title (I think I've got this one covered). I want to use Zen Cart's great features and benefit from the many automated tasks it can handle and stay as far away from having to manually handle sales, processing, notification, and delivery as possible to keep labor costs down.